About this project BUBBLY TO LAST DROP - This is the first and only champagne stopper on the market with a pump. The built-in upgraded pump-piston system increases in-bottle pressure more efficiently than those basic types, so it will keep your sparkling wine fresh and bubbly to the last drop. PROFESSIONAL PREPARATION - Insert the champagne holder into the bottle, fold down the hinge-mounted flap to lock the lower lip of the bottle, and press the button until you feel strong resistance, which indicates an airtight seal. PREMIUM SEAL CORKS - Our champagne corks are made of premium stainless steel and ABS - the same quality as MiTBA - so you can rely on it for the long haul to give you the best results: 100% leak-proof and airtight seal It's also super easy to clean and dishwasher safe. GREAT VALUE AND PERFECT GIFT - By offering 2-pack of HYZ Champagne Protectors, we've been able to save on packaging, processing and shipping costs. We pass these savings on to you without compromising quality. Size: 6*3.5cm, suitable for regular champagne bottles